Linux network Engineer , with more than Twelve years experience in Internet service provider. CCNP Certified as well , with a great experience in dealing with complex ISP networks designing & planning for ADSL infrastructure. long experience with AAA for pppoe ,vpdn , and integrate radius servers with Cisco equipment. working with Asterisk since 2011 & have long experience experience in VoIP servers such as Elastix & freepbx and implement security solutions for VoIP With great experience in Linux squid cache servers and integrating it with Cisco and implement best solution that consume less hardware resources. i have an experience with Firewall & security including security on Routers , switches & ASA appliances . providing the best technologies for security & VPN including cisco VPN , openvpn , softether , ipsec , pptp , openswan . My vision is (( Fast work with best quality))